Complementary DNA and/or RNA molecules pair with each other by hydrogen bonding
during replication, transcription, or translation. Which of the
... [Show More] following pairs of molecules
are complementary? (Select all that apply) - ANSWER ==tRNA and mRNA
mRNA and template DNA
During DNA replication the parent strands ______ and DNA polymerase______. -
ANSWER ==separate, creates the new DNA strands
The following sequence is one strand of the DNA that makes up the SNCA gene that
codes for alpha-synuclein, a protein found in the brain. 5' ATGCGGTGACGG 3' Which
of the following is the complementary second DNA strand? - ANSWER ==5'
CCGTCACCGCAT 3'
Assume you start with one copy of target DNA. How many copies of DNA will be made
after 4 rounds of PCR (assume 100% reaction efficiency)? - ANSWER ==16
What are the necessary ingredients for a PCR reaction? - ANSWER ==dNTPs;
thermostable DNA polymerase; DNA primers; double-stranded DNA
A frameshift mutation changed this sequence 5' AAC GCT TAG 3' to which of the
following? - ANSWER ==3' GAT TCG CA 5'
Which choice represents a silent mutation for this sequence: 5' GGU UGC ACU 3'? -
ANSWER ==5' GGU UGC ACA 3'
Beta thalassemia is a disease that causes low levels of hemoglobin. To inherit this
autosomal disease, an individual must receive two mutant alleles. Which of the following
likely represents the chromosome pairs of a healthy parent who has a child with beta
thalassemia? (The yellow band represents the mutant allele and the green band
represents the normal allele.) * - ANSWER ==Option 3- The chromosomes of a
healthy parent who has a child with beta thalassemia must be a carrier of the disease,
i.e. the parent must have one copy of the (dominant) normal allele and one copy of the
(recessive) mutant allele.
Your black dog and your friend's white dog have puppies. If inheritance of coat color is
co-dominant, the coat color of the puppies will be ________________, the color will be
_______________ if incompletely dominant, and it will be _______________ if it is
complete dominant - ANSWER ==Black-and-white spotted, gray, black
Freidreich's ataxia is an autosomal recessive disorder that results from multiple GAA
insertions into the FXN gene. Which of the following best illustrates the inheritance
pattern of Freidreich's ataxia in a family with the disease? - ANSWER ==None of
these pedigrees are consistent with an autosomal recessive pattern.
The pedigree chart for Option 3 shows evidence of carriers, and both males and
females have Friedrich's ataxia in this chart. These properties of the chart indicate that it
is for an autosomal recessive disease.
Increased IGF2 expression is associated with many types of cancer. Studies have
shown that when mothers take folic acid before conception, children have increased
methylation of this gene. Which of the following is the best explanation for how this
increased methylation could be beneficial? - ANSWER ==The increased methylation
decreases the space between nucleosomes, decreasing the expression of the IGF2
gene.
Which of the following sequences represents a coding strand of DNA that leads to the
production of the following polypeptide chain: Tyr Cys Val - ANSWER ==5' TAC TGT
GTA 3'
Which of the following accurately compares DNA mismatch repair and nucleotide
excision repair? - ANSWER ==Both processes involve recognition of the section
requiring repair, removal of this section, replacement of the bases with DNA
polymerase, and ligation.
Which of the following best describes the role of nonhomologous end joining? -
ANSWER ==When there are double stranded breaks, this process joins the ends of
the DNA together to fix the break.
The _____ and _____ are common to all amino acids but the ______ is unique to each
amino acid. - ANSWER ==Carboxyl group, amino group, R group
Which of the following amino acids would form an ionic bond with lysine? - ANSWER
==Option 4-To form an ionic bond, a positively charged amino acid, like lysine, must
form a bond with a negatively charged amino acid.
17. What portion of the amino acid is located inside the red box? - ANSWER
==Carboxyl group
Which of the following pairs of amino acids would form a hydrophobic interaction? -
ANSWER ==Option 1-both of the amino acids are hydrophobic (their side-chains end
with -CH2).
Which level of protein structure is composed only of peptide bonds? - ANSWER
==Primary [Show Less]